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Abstracts
We report on the transitions between the ferromagnetic order, spin-glass behavior, heavy fermion and fluctuating valence state in a series of isostructural compounds CeT_4M (T = Ni, Cu; M = Al, Ga, Mn). The dilution of Ce or the T and M elements allowed us to follow the physical properties evolution employing the measurements of the heat capacity, dc magnetic susceptibility, frequency dependent ac magnetic susceptibility, magnetization relaxation, inelastic neutron scattering and also the X-ray photoemission spectroscopy. It is shown that the Mn rich compounds lean towards the spin glass behavior. For the compounds governed by the close to localization Ce 4f states the effect of the crystal electric field has been studied. It has been shown that the spin glass-like behavior can significantly influence the physics of the CeT_4M compounds.
Discipline
- 75.30.Cr: Saturation moments and magnetic susceptibilities
- 78.70.Nx: Neutron inelastic scattering
- 71.20.Lp: Intermetallic compounds
- 71.27.+a: Strongly correlated electron systems; heavy fermions
- 75.50.Lk: Spin glasses and other random magnets
- 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
Journal
Year
Volume
Issue
Pages
1014-1018
Physical description
Dates
published
2012-05
Contributors
author
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
- Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
- Institute of Physics, Silesian University, Katowice, Uniwersytecka 4, 40-007 Katowice, Poland
author
- Helmholtz-Zentrum, Glienicker Straße 100, D-14109 Berlin, Germany
author
- Institut Laue Langevin, 6 rue Jules Horowitz, B.P. 156 F-38042, Grenoble Cedex 9, France
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n5-6p07kz